Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties
The prevalent issue of cadmium (Cd) in naturally selenium (Se)-enriched soils has significantly impacted the safe utilization of Se-rich soils. Although Se antagonizes Cd and is affected by Se:Cd stoichiometry, the mechanism behind this interaction remains unclear. To reveal the relation between the...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-12-01
|
| Series: | Agronomy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4395/14/12/2941 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850050973228072960 |
|---|---|
| author | Zebin Tan Qinlei Rong Wenfeng Wang Haiyan Jiang Luyao Yu Jingrui Hu Jie Chen Xuefeng Liang Xiaomin Zhao Chunhuo Zhou |
| author_facet | Zebin Tan Qinlei Rong Wenfeng Wang Haiyan Jiang Luyao Yu Jingrui Hu Jie Chen Xuefeng Liang Xiaomin Zhao Chunhuo Zhou |
| author_sort | Zebin Tan |
| collection | DOAJ |
| description | The prevalent issue of cadmium (Cd) in naturally selenium (Se)-enriched soils has significantly impacted the safe utilization of Se-rich soils. Although Se antagonizes Cd and is affected by Se:Cd stoichiometry, the mechanism behind this interaction remains unclear. To reveal the relation between the soil bioavailable Se:Cd molar ratio (AMR-Se:Cd) and the transformation of Se and Cd fractions, as well as to identify the principal controlling factors, we conducted a study in Shanggao County, Yichun City, a naturally Se-rich area in Jiangxi Province, and quantitatively analyzed the distribution features of Se, Cd, and AMR-Se:Cd across different soil types and land use types. The results demonstrated that soil AMR-Se:Cd was statistically positively correlated with the bioavailable Se content (<i>r</i> = 0.331, <i>p</i> < 0.01) and had a negative correlation with the bioavailable Cd content (<i>r</i> = −0.402, <i>p</i> < 0.001). Cd was transformed from highly bioavailable fractions to less bioavailable fractions as the AMR-Se:Cd increased. A suitable AMR-Se:Cd was conducive to achieving a higher mobility of Se (mobility factor of 12.31%) and a lower mobility of Cd (mobility factor of 23.49%) simultaneously. Spearman correlation analysis and partial least squares path modeling revealed that soil type and land use type modulated the morphological transformation of soil Se and Cd by influencing changes in free Fe-Al oxides and soil organic matter content, which in turn altered the AMR-Se:Cd. Therefore, the findings of this study can offer guidance for regulating the appropriate AMR-Se:Cd in Se-rich soils through management practices to enhance the bioavailability and mobility of soil Se while diminishing the bioavailability and mobility of Cd. |
| format | Article |
| id | doaj-art-ced09f0e3bfc4dae94b705b527b20df3 |
| institution | DOAJ |
| issn | 2073-4395 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj-art-ced09f0e3bfc4dae94b705b527b20df32025-08-20T02:53:18ZengMDPI AGAgronomy2073-43952024-12-011412294110.3390/agronomy14122941Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil PropertiesZebin Tan0Qinlei Rong1Wenfeng Wang2Haiyan Jiang3Luyao Yu4Jingrui Hu5Jie Chen6Xuefeng Liang7Xiaomin Zhao8Chunhuo Zhou9College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaKey Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Nanchang 330045, ChinaNortheast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, ChinaCollege of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaAgro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, ChinaCollege of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaCollege of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, ChinaThe prevalent issue of cadmium (Cd) in naturally selenium (Se)-enriched soils has significantly impacted the safe utilization of Se-rich soils. Although Se antagonizes Cd and is affected by Se:Cd stoichiometry, the mechanism behind this interaction remains unclear. To reveal the relation between the soil bioavailable Se:Cd molar ratio (AMR-Se:Cd) and the transformation of Se and Cd fractions, as well as to identify the principal controlling factors, we conducted a study in Shanggao County, Yichun City, a naturally Se-rich area in Jiangxi Province, and quantitatively analyzed the distribution features of Se, Cd, and AMR-Se:Cd across different soil types and land use types. The results demonstrated that soil AMR-Se:Cd was statistically positively correlated with the bioavailable Se content (<i>r</i> = 0.331, <i>p</i> < 0.01) and had a negative correlation with the bioavailable Cd content (<i>r</i> = −0.402, <i>p</i> < 0.001). Cd was transformed from highly bioavailable fractions to less bioavailable fractions as the AMR-Se:Cd increased. A suitable AMR-Se:Cd was conducive to achieving a higher mobility of Se (mobility factor of 12.31%) and a lower mobility of Cd (mobility factor of 23.49%) simultaneously. Spearman correlation analysis and partial least squares path modeling revealed that soil type and land use type modulated the morphological transformation of soil Se and Cd by influencing changes in free Fe-Al oxides and soil organic matter content, which in turn altered the AMR-Se:Cd. Therefore, the findings of this study can offer guidance for regulating the appropriate AMR-Se:Cd in Se-rich soils through management practices to enhance the bioavailability and mobility of soil Se while diminishing the bioavailability and mobility of Cd.https://www.mdpi.com/2073-4395/14/12/2941Cd-contaminated seleniferous soilssoil bioavailable Se:Cd molar ratiotransformation of Se and Cd fractionssoil propertiessoil typesland use types |
| spellingShingle | Zebin Tan Qinlei Rong Wenfeng Wang Haiyan Jiang Luyao Yu Jingrui Hu Jie Chen Xuefeng Liang Xiaomin Zhao Chunhuo Zhou Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties Agronomy Cd-contaminated seleniferous soils soil bioavailable Se:Cd molar ratio transformation of Se and Cd fractions soil properties soil types land use types |
| title | Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties |
| title_full | Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties |
| title_fullStr | Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties |
| title_full_unstemmed | Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties |
| title_short | Strategies for Regulating the Bioavailability and Mobility of Se and Cd in Cd-Contaminated Seleniferous Soils: Coupling the Bioavailable Se:Cd Molar Ratio with Soil Properties |
| title_sort | strategies for regulating the bioavailability and mobility of se and cd in cd contaminated seleniferous soils coupling the bioavailable se cd molar ratio with soil properties |
| topic | Cd-contaminated seleniferous soils soil bioavailable Se:Cd molar ratio transformation of Se and Cd fractions soil properties soil types land use types |
| url | https://www.mdpi.com/2073-4395/14/12/2941 |
| work_keys_str_mv | AT zebintan strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT qinleirong strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT wenfengwang strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT haiyanjiang strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT luyaoyu strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT jingruihu strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT jiechen strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT xuefengliang strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT xiaominzhao strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties AT chunhuozhou strategiesforregulatingthebioavailabilityandmobilityofseandcdincdcontaminatedseleniferoussoilscouplingthebioavailablesecdmolarratiowithsoilproperties |